SSA-342438

Siemens Security Advisory by Siemens ProductCERT

SSA-342438: Privilege Escalation Vulnerability in SINUMERIK ONE, SINUMERIK 840D and SINUMERIK 828D

Publication Date:	2024-09-10
Last Update:	2024-09-10
Current Version:	V1.0
CVSS v3.1 Base Score:	8.8
CVSS v4.0 Base Score:	9.3

SUMMARY

SINUMERIK ONE, SINUMERIK 840D sl and SINUMERIK 828D are affected by a privilege escalation vulnerability that could allow an authenticated local attacker to escalate their privileges in the underlying system.

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where fixes are not, or not yet available.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
SINUMERIK 828D V4 All versions affected by CVE-2024-41171	Currently no fix is planned
SINUMERIK 828D V5 All versions < V5.24 affected by CVE-2024-41171	Update to V5.24 or later version Updated software version can be obtained from Siemens customer support or a local partner.
SINUMERIK 840D sl V4 All versions affected by CVE-2024-41171	Currently no fix is planned
SINUMERIK ONE All versions < V6.24 affected by CVE-2024-41171	Update to V6.24 or later version Updated software version can be obtained from Siemens customer support or a local partner.

WORKAROUNDS AND MITIGATIONS

Product-specific remediations or mitigations can be found in the section Affected Products and Solution.
Please follow the General Security Recommendations.

GENERAL SECURITY RECOMMENDATIONS

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

PRODUCT DESCRIPTION

SINUMERIK CNC offers automation solutions for the shop floor, job shops and large serial production environments.

SINUMERIK ONE is a digital-native CNC system with an integrated SIMATIC S7-1500 CPU for automation.

VULNERABILITY DESCRIPTION

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This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

Vulnerability CVE-2024-41171

Affected devices do not properly enforce access restrictions to scripts that are regularly executed by the system with elevated privileges. This could allow an authenticated local attacker to escalate their privileges in the underlying system.

CVSS v3.1 Base Score	8.8
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CVSS v4.0 Base Score	9.3
CVSS v4.0 Vector	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE	CWE-732: Incorrect Permission Assignment for Critical Resource

ADDITIONAL INFORMATION

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories

HISTORY DATA

V1.0 (2024-09-10):

Publication Date

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